Path: utzoo!attcan!uunet!lll-winken!ncis.tis.llnl.gov!helios.ee.lbl.gov!pasteur!ames!apple!bloom-beacon!SRC.DEC.COM!msm
From: msm@SRC.DEC.COM (Mark S. Manasse)
Newsgroups: comp.windows.x
Subject: Re: Save under problem
Message-ID: <8905182036.AA10896@jumbo.pa.dec.com>
Date: 18 May 89 20:36:00 GMT
References: <3018@ncsuvx.ncsu.edu>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 22


Randy Buckland wonders why save-under doesn't work on top-level 
windows.  The fault, as usual, is with the window manager; since the 
top-level window is being reparented by the window manager, the 
save-under protects the bits of the window manager's frame, and not 
the bits of other top-level windows.  Window manager writers may want 
to take this effect into account, and relay the request for save-unders 
to the frame window.  Whether window managers should also turn off 
save-unders on the window itself so that the server doesn't store 
a large pixmap for the never-to-be-seen contents of the frame 
underneath the window is a philosophical issue that's better left 
unanswered here.

Randy may also want to make his menu be a transient-for window, which 
some window manager's might use as a hint that save-under would be 
a reasonable idea.

Other than non-reparenting window managers (such as uwm), I don't 
know of any window manager that actually does any of this, by the 
way.

Mark